This symposium aims to generate discussion and understanding of design-based research (DBR) in design and engineering cognition. Seven empirical reports exploring design and engineering cognition or using DBR give the symposium depth and structure: Studies of 1) thirty tweenage girls in designing a mother’s day game, media, and robots; 2) fifteen elementary students testing a new educational video game; 3) nineteen young adults within an immersive virtual environment; 4) four teen students on the design of games; 5) six nursing students involved in a simulated learning environment; 6) Conceptual paper exploring technology and the “design” in DBR; and 7) Methodological paper connecting DBR with design and engineering cognition and ethical know-how. Arguably, new technologies along with a return of DIY or maker culture invite or configure everyone to employ inventive practices or “designerly ways of knowing.” Design now marks interaction with new technologies, making DBR increasingly important and relevant for STEM.